Work

GYRE: A new open-source stellar oscillation code

Year: 2013

Type: article

Abstract: We introduce GYRE, a new open-source stellar oscillation code which solves the adiabatic/non-adiabatic pulsation equations using a novel Magnus Multiple Shooting (MMS) numerical scheme. The code has a global error scaling of up to 6th order in the grid spacing, and can therefore achieve high accuracy with few grid points. It is moreover robust and efficiently makes use of multiple processor cores and/or nodes. We present an example calculation using GYRE, and discuss recent work to integrate GYRE into the asteroseismic optimization module of the MESA stellar evolution code.

Source: Proceedings of the International Astronomical Union

DOI: 10.1017/s1743921313015275

Authors: Rich Townsend, Seth Teitler, Bill Paxton

Institutions: University of Wisconsin–Madison, University of California, Santa Barbara, Kavli Institute for Theoretical Physics

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, National Aeronautics and Space Administration

Awards: MAGNETIC FIELDS ARE UNEXPECTED IN MASSIVE STARS, DUE TO THE ABSENCE OF A DYNAMO CONVECTION ZONE BENEATH THEIR SURFACE LAYERS. NEVERTHELESS, KILOGAUSS, GRASSY: A Hardware-Accelerated Spectral Synthesis Engine for Asteroseismic Mode Identification, Wave Transport of Angular Momentum: A New Spin on Massive-Star Evolution